Tire inflating device



M. G. zmsrri Dec. 1, 1931.

ATING DEVICE TIRE INFL Filed May 28. 1930 2 Sheets-Sheet Dec. 1, 1931. M. G. zlNsrfz TIRE iNFLATING DEVICE Filed May 28, 1930 2 Sheets-Sheet 2 in/WWW If M 5'. Zz'nsz'Zz Patented Dec. 1, 1931 i UNITED STATES PATENT OFFICE p mfinw e. zmsrrz, or BRookFmLn, Wisconsin i I t v i V TIRE INFLATING DEVICE. Y i I Application filed May 28, 1930. Serial No. 455,623.

This invention relates to tire inflating de- Fig. 4 is a fragmentary sectional view vices and more particularly to a drum adaptthrough amodified form of drum, ,p ed to bemounted upon a brakedrum or Wheel Fig. 1s a similar view through another of a vehicle so thatair may be delivered from modifiedform of drum, p

5 a source of supply to a pneumatic tire carried F 1g. 6 1s a sectional v1eW taken transversely 5 by the wheel while the vehicle is in motion or hrough another modified form of drum, and standing still. Fig. 7 1s a sectional view through another One object of the invention is to vprovide aln dlfied form of drum. I I p device of this character which may form a Thls llhplteved drum Whlch terms p t O cal part of a tire inflating apparatus ofthe type i fl g pparatus may be secured 00 1 disclosedin'my prior Patent No.1 ,788,699is egelhst the Spokes f 11 Wheel Q b U a' sued January 13', 1931 wherein air is to be h t' as s w g a pumped through'tubes or pipes leading from h facts It m y be seeufed about l 6 the instrument board of'an automobile, are0- 8 to a y e e Sultehle pp p h a plane or other vehicle todrums mounted upon Vehlele that the m h y rotate wheels of the vehicle and delivered from the the Whe and t e Wlthlh the d h d u th h pipes tt h d to h i fl ti stat onary relative to the drum or thedrum stems f ti l p I r held stationary and the filler allowed to ro- Another Object of theinvention is to so tate with the wheel. This improved drum, 1

form the drum that When it is applied to a which is indicatedingeneml by t humer 31 7 1 3 may be constructed as shown'in Fi ures Wheel or brake drum the CtSlli or bod 0r- 2 o b y p 2 and 3 or-as shown in the modified forms tion of the drum may turn with the wheel illustm Fi r U and a filler be held stationary or the drum tsg g $5 5 g ggg g zw tr held stationary and the filler allowed to turn a with the wheel. r Y, Another object of the invention is to provide a drumfor the purpose set forth having such constructionthat the filler and packing having a main band or ring 4 in the outer face. of which is formed a circumferentially extending groove or pocket 5. A port 6 is formed through the ring to receive a pipe orthat the drum consists of an annular body '75 may be easily disposed Within the drum tube 7 through which air is to pass from the $0 g f flg danger 0f leakage pocket to the valve'controlled inflating stem inginflation of a tire prevented. 8 on pneumatic tire -9 carried by the wheel Another object of the invention is to so 1. 1 Rings 10 forming sidewalls of the drum dispose packing within the circumfe'rentially are threaded into engagement with the band extending chamber ofthe drum that airimay 3S ShOWIl at ll y these rings a be prevented from passing out'of a pocket "termed Withflahges which P j oward formed therein except through apipe leading each other t termhmte' 1h p e fl to a tire to be inflatedand further to prevent to each other and w r r t form an ll 7 danger of the Packing obstructing the air annular wall 13 havmg a cu'cumferentmny I um recewmg pocket. I extendlng slot 14. By this arrangement a W plate 15 leading from a suitable source of V clemprelesed air or having one end passed y -t rou an instrument board of an a v Flgure 1 1S a I elevatlon Ishowmg the lnobil or aeroplane for en a ement b y a lh' h' PP to vehlffle e pump operated by the drivei o t the vehicle 2 15 an enlarged 'Seetlehal e may extend into the drum through the slot through the drum. 14 and the drum may have rotary motion Fig. 3 1s a sectional view taken diametricalwithout interference by'thetube or pipe 15. 1 1y through the drum and showing the drum It will be obvious that, ifdesired, the pipe 15 i applied to a brake shoe of a Wheel, may be connected with the inflating neck or' The invention is illustrated in'the accompanying drawings, wherein,

stem of the tire and the'pipe 7 extended to the instrument board or source of compressed air.

The drum defines a circumferentially extending chamber 16 with which the slot 14 communicates and within this chamber is disposed a thick packing ring or band 17 surrounded-by a metal band 18 which is split and must be expanded in order to be disposed about the packing. Therefore, this ring or band has a tendency to -contractat'lzfi't has been applied and compresses the packing so that it will'be held firmly againstthe main ring or inner wall i of the drum. Grooves 19 are formed in the innercircumferentially" extending face of the packing to receive ribs or beads 20 which project'from the wall 4 and prevent the packing from having move ment transverselyin thechamber. Between the grooves 19 is formed a circumferentially extending groove or recess 21 which registers with-but is of greater width than the pocket 5 and in this groove is disposed a spacing ring 22 which serves to prevent the packing from being forced into the pocket 5 and obstructing the pocket; The pipe 15 extendsthrough the compressing ring 18 and packing:

with its inner'end engaged through t e spacing ring 22 for communication with thepocket 5 and, therefore,=airmay'be forced through'the ipe 15 into the pocket and flow through the pocket to the pipe 7 through whichit passes to the inflating stem of the movement 'circumferentially in the 'chamber.-

' may'lhave rotary movement relative to each other and the packing may be held stationary pneumatic tire. While the packing-fits" snug ly in the chamber and prevents leakage of air fror rithe pocket 5 through the chamber and slot 14', this-"packing is permitted to have Therefore-,the drum and the packing together withthe cooperating rings or bands 18 and 22 whilethe drum rotateswith the wheel.

The drum illustrated in Figure 4 is a moditied construction." This drum has an inner clrcum'ferentially extending wall '23, corre- 7 sponding' was; inner wall 4, and is formed w th'an opening 2e lto receive one end of the p1pe17 Ribs 25 which extendcircumferentially about the wall 23 define-an air receiving channel or pocket 26'andalso serve to hold packing rlngs 27 firmly against side walls 28 and 29' of the drum. Theiwal l 28 isformed integral with the inner wall 23 whereas the: wall 29 has threaded engagement witht-he inner wall"so that it may be removed when are necessary.-

repa i ifs or replacements Flanges "31, which correspond to the flanges 12, project toward each other from-the walls:

28 an d- 291:0" form an outer wall 32 having ainto the slot 33 and this web is drilled, as shown at 38, to form an air passage adapted to receive one end of the pipe 15 so that air may pass from the pipe into the pocket 26.

Packing rings 39 are provided at opposite sides of the web 37 between the inner and .outer bands 35 and 36 to bear against the side lwalls 28 and 29 of the chamber inorder to prevent escape of air, and it should be noted that the packing rings 27 are of greater dept-h their the flangea 25 so that the inner ham 1 35 willbe prevented from contacting with the flanges when the packing 27 is comp ssed 7 A y I In the" modified"foriii'illustrated in Figure 5, the drum'has its inner andouter walls 40 and 41'joined'by a rigid side wall 42 and at the opposite side of the drum from the wall 42Ythe inner and outerwalls are internally threaded, as shown at- 43, in order to receive threaded rings 44' which-are spaced .from Y eachother and cooperate to form aside wall 45 having a circumferentiall extending slot 46. The pipe 7' is engage opening 47{ to communicate with a circumin a threaded ferentiallySextending' pocket 48 corresponding to the pocket 5 The filler which is passed into the chamber 49 of the drum'when the rings kll are removed consists-of inner I and out-erbands 50 and 51 joined by a web- 52 \vhicli projects '-'o'utwardly beyond the outer band into the slot 46'and is drilled, as

shownat 53, to form anair passage having its outer end threa-ded for, engagement by one end of the pipe'15. ,Packing rings 54 are disposed'at opposite sides of the web between the band '50and the wallffl2 of the drum and 'othe'if packingri'ngs '55 are disposed between the bandsf5O and 51fat opposite sides of the f-webl" These" packing rings bear firmly against the side wall 42 and inner and outer walls? 40' and 1 -1 of the drum and are formed with fre'cessejsto receive-beads 56 formed'upon the bandbOfin orderito preventithe packing rin and" bands froifl'slipping transversely of-eachbtlfem' The'refore,"the'web will be retained in operative relationtothe pocket 48a-nd 'ai'r can pass freely through the'passage 53 into thepocket: i

V The form of drum illustrated in Figurefi. i is somewhat similar to that illustrated in Figuresv 3' and 4, V In this form of the'invention the side wall 57 is formed integral with together withthe'fiangeTGO of a removable the innerwauss' and carriesafiange 59 which side wall 61 formsan outer side wall having a 5161; 62. Ribs 63 andG l project from the side walls and inner wall toengage in groove's' iformedin"a packing ring 65 and -hold "'-the packingin place while at the same time'a-llowingj the packing to have movements circumferentially in thechamb'en 66 of thedrumz' A recess67, corresponding to therecess '21, is formed in the inner face of the packing to 'registerwith an air-pocket- 68 formed in the inner wall and Within the recess 67 is disposed a ring or band 69, corresponding to the band 22, and serving to prevent the packing from working into and obstructing the air pocket. The outlet passage with which the pipe 7 is connected leads from the pocket 68 transversely through the inner wall instead of radially thereof and may be formed at any point desired about the circumference of the drum. The binding ring or band 71, which corresponds to the band 18, fits tightly about the packing and is formed with an outstanding rib 72 which projects through the slot 62. Bearing balls 73 are disposed between the flange 72 and Walls of the slot throughout the circumference of the drum in order to cause the drum and band to turn readily relative to each other. Alined openings are formed through the band 69 and flange of the band 71 so that the pipe 15 may pass through these bands and radially through the packing with its inner end communicating with the air pocket 68.

In Figure 7, therehas been illustrated an embodiment of the invention of the general type disclosed in Figure 5. In this form the. inner and outer walls 73 and 74 are joined by a side wall 75 formed integral therewith and this side wall is formed with a circumferentially extending groove 76, corresponding to the groove or pocket 48, and with which the pipe 7 communicates. A band 77 formed with a side flange 78 fits within the chamber 79 of the drum with its side flange disposed to register with the air pocket and at opposite sides of the flange are disposed packing rings 80. These packs ing rings bear against the inner surfaces of the walls of the chamber and have their faces which bear against the band 77 formed with grooves 81 to receive ribs 82 projecting from the band. By this arrangement the band will be retained in proper position for its flange to register with the air pocket. After the band 77 has been set in place, a packing ring 83 is fitted into the chamber against this band and a ring or band 84 is then set in place. This band 84 is formed with a side flange 85 projecting outwardly through a slot 86 defined by rings 87 which have threaded engagement with the walls 73 and 74 of the drum and alined openings are formed through the bands 77 and 84 and their flanges in order to receive the pipe 15. A suitable number of springs 88 are disposed between the band 84 and wall forming rings 87, and

it will be readily understood that by rotating these rings in order to move them inwardly or outwardly tension of the springs maybe extending chamber, said drum having inner and outer walls and a side wall formed integral therewith, a circumferentially extending pocket being formed in the side wall, the other side of the drum being open and the portions of the inner and outer walls adjacent thereto being threaded, rings threaded into engagement with the inner and outer wall and spaced from each other to form a circumfer'entially slotted side wall, a filler in said chamber rotatable therein and serving to prevent air escaping from the pocket through the chamber and slotted side wall,

said filler consisting of inner and outer bands, a web extending from the inner band to said pocket, packing rings at opposite sides of said web, ribs extending from the inner band and engaged in grooves formed in said rings to prevent transverse movement, a packing ring between said bands, a web extending from the outer band through the slot of the outer side wall, springs between the outer band and the rings forming the slotted wall and tensioned by adjusting the wall forming rings, and tubes communicating with said pocket one through the integral'side wall and the other through the filler and slotted side wall whereby air may be fed from a source of supply through one tube into the pocket and pass from the pocket through the other tube to a tire to be inflated while relative rotation is taking place bet-ween the drum and the filler.

In testimony whereof I a-flix my signature.

MATTHEW G. ZINSITZ. [1 s.]

controlled and the amount of pressure applied by the springs regulated.

It is to be understood that in each embodiment of the invention the outside. or inside of the drum can be any desiredshape, such as 

